Home / 5,169.20-7,133.49-2,811.33

Finding the Fourth Proportional to 5,169.20, 7,133.49 and 2,811.33

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Solution

The fourth proportional to 5,169.20, 7,133.49 and 2,811.33 is: 3,879.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,169.20 : 7,133.49 = 2,811.33 : x
  2. Step 2: Convert to fraction form
    5,169.20/7,133.49 = 2,811.33/x
  3. Step 3: Cross multiply
    5,169.20x = 7,133.49 × 2,811.33
  4. Step 4: Simplify right side
    5,169.20x = 20,054,594.44
  5. Step 5: Solve for x
    x = 20,054,594.44/5,169.20
  6. Step 6: Final answer
    x = 3,879.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.